AD/PR/36 - Blade Counterweight Capscrew Holes (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Propellers - Variable Pitch - Dowty Rotol AD/PR/36 Blade Counterweight Capscrew Holes 13/2006 TX

Applicability: All Dowty R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12 and R334/4-82-F/13 propellers, if blades are installed with serial numbers (S/N) A156121 through A156132, A156137 through A156160, A156165 to A156168, A156177 through A156184, A156194 and A156196 through A156200.

Note 1: These propellers are known to be installed on, but not limited to CASA 212, M7 Aerospace (formerly Fairchild, Swearingen) SA227TT, SA227AT and SA227AC, and BAE Systems (formerly British Aerospace) Jetstream 3100 and 3200 series aeroplanes. Requirement: 1. Identify the propeller blades that have a serial number listed in the applicability section of this AD and inspect the affected blades in accordance with Dowty Propellers Alert Service Bulletin (ASB), as applicable.

2. If discrepancies are found, re-machine the counterweight attachment holes.

Note 2: Contact Dowty Propellers, for advice.

3. Do not install any of the listed S/N propeller blades on an aircraft unless the blade has been inspected and, if necessary, reworked in accordance with the requirements of this AD.